# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

########################################################################
# OPENAPI-URI: /api/code/evolution
########################################################################
# get:
#   responses:
#     '200':
#       content:
#         application/json:
#           schema:
#             $ref: '#/components/schemas/Timeseries'
#       description: 200 Response
#     default:
#       content:
#         application/json:
#           schema:
#             $ref: '#/components/schemas/Error'
#       description: unexpected error
#   security:
#   - cookieAuth: []
#   summary: Show code evolution as a timeseries
# post:
#   requestBody:
#     content:
#       application/json:
#         schema:
#           $ref: '#/components/schemas/defaultWidgetArgs'
#   responses:
#     '200':
#       content:
#         application/json:
#           schema:
#             $ref: '#/components/schemas/Timeseries'
#       description: 200 Response
#     default:
#       content:
#         application/json:
#           schema:
#             $ref: '#/components/schemas/Error'
#       description: unexpected error
#   security:
#   - cookieAuth: []
#   summary: Show code evolution as a timeseries
#
########################################################################


"""
This is the TopN committers list renderer for Kibble
"""

import json
import time
import hashlib


def run(API, environ, indata, session):

    # We need to be logged in for this!
    if not session.user:
        raise API.exception(403, "You must be logged in to use this API endpoint! %s")

    now = time.time()

    # First, fetch the view if we have such a thing enabled
    viewList = []
    if indata.get("view"):
        viewList = session.getView(indata.get("view"))
    if indata.get("subfilter"):
        viewList = session.subFilter(indata.get("subfilter"), view=viewList)

    breakdown = False
    onlycode = False

    ####################################################################
    ####################################################################
    dOrg = session.user["defaultOrganisation"] or "apache"
    query = {
        "query": {
            "bool": {
                "must": [
                    {"range": {"time": {"from": 0, "to": int(time.time())}}},
                    {"term": {"organisation": dOrg}},
                ]
            }
        }
    }
    # Source-specific or view-specific??
    if indata.get("source"):
        query["query"]["bool"]["must"].append(
            {"term": {"sourceID": indata.get("source")}}
        )
    elif viewList:
        query["query"]["bool"]["must"].append({"terms": {"sourceID": viewList}})

    # We need scrolling here!
    res = session.DB.ES.search(
        index=session.DB.dbname,
        doc_type="evolution",
        scroll="2m",
        size=5000,
        body=query,
    )
    sid = res["_scroll_id"]
    scroll_size = res["hits"]["total"]
    if type(scroll_size) is dict:
        scroll_size = scroll_size["value"]  # ES >= 7.x

    timeseries = []
    tstmp = {}

    while scroll_size > 0:
        for doc in res["hits"]["hits"]:
            updates = doc["_source"]
            ts = updates["time"]  # round(updates['time']/86400) * 86400
            if updates["time"] % 86400 != 0:
                continue
            tstmp[ts] = tstmp.get(ts, {})
            item = tstmp[ts]
            if breakdown:
                pass
            else:
                item["code"] = item.get("code", 0) + (updates["loc"] or 0)
                item["comments"] = item.get("comments", 0) + (updates["comments"] or 0)
                item["blanks"] = item.get("blanks", 0) + (updates["blank"] or 0)

        res = session.DB.ES.scroll(scroll_id=sid, scroll="1m")
        sid = res["_scroll_id"]
        scroll_size = len(res["hits"]["hits"])

    for k, v in tstmp.items():
        v["date"] = k
        timeseries.append(v)

    timeseries = sorted(timeseries, key=lambda x: x["date"])
    JSON_OUT = {
        "widgetType": {"chartType": "line", "stack": True},  # Recommendation for the UI
        "timeseries": timeseries,
        "sortOrder": ["code", "comments", "blanks"],
        "okay": True,
        "responseTime": time.time() - now,
    }
    yield json.dumps(JSON_OUT)
